Use word to type a copybook with imitation Song characters, and the font is imitation Song characters. 5mm:7mm seems to be the fourth. Print it out and measure it. If you add a box, you can add a box in a country with small text, or make a table in word.
After reading your supplement, as long as you choose the right font, it is absolutely standard. Official documents and building codes in many countries are edited and printed by computers.